package com.creator.pangu.core.global;

import com.alibaba.fastjson.JSON;
import com.creator.pangu.common.utils.R;
import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.RestControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;

/**
 * 返回对象统一封装
 *
 * @author Lijunjie
 */
@RestControllerAdvice
public class GlobalResponseAdvice implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }

    @Override
    public Object beforeBodyWrite(Object body, MethodParameter returnType, MediaType selectedContentType, Class selectedConverterType, ServerHttpRequest request, ServerHttpResponse response) {

        if (body instanceof R<?>) {
            return body;
        }
        if (body instanceof String) {
            response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
            return JSON.toJSONString(R.success(body));
        }
        return R.success(body);
    }
}
